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Nebraska

Research Roundup | Nov. 14 | Nebraska Today

Welcome to the Research Roundup: a group of highlights from Husker’s newest analysis and inventive endeavors.

Pickin’ good vibes

In the United States, almost one-fifth of commercially reared piglets die within the roughly three weeks after delivery — the time {that a} litter nurses from its mom earlier than being weaned from her milk. Farmers and researchers are working collectively to review how sows and their litters could be higher monitored to cut back this mortality fee. Although video surveillance is efficient, it requires satisfactory lighting and digital processing and storage capabilities that make large-scale implementation troublesome. Wearable sensors, however, wrestle with the challenges of sturdiness, battery life, and different points.

Nebraska’s Tami Brown-Brandl, Raj Sharma and Asya Macon, all from the Department of Biological Systems Engineering, labored with colleagues on the University of Michigan, Stanford University and Carnegie Mellon University to discover an alternative choice. The staff positioned sensors on the underside of a number of pens to check whether or not vibration may assist establish a sow’s posture – mendacity vs. sitting/kneeling vs. standing – and the feeding exercise of each the sow and her piglets.

Using machine studying, the vibration-sensitive system precisely categorized a sow’s posture within the overwhelming majority of instances: 95.5% sitting/kneeling, 99.9% mendacity and 100% standing. It additionally accurately categorized feeding a sow 96% of the time and accurately matched feeding piglets 91.3% of the time.

The outcomes recommend that vibration sensors may show to be a dependable and sensible method to detect the components – piglet measurement and illness, accidents attributable to sows – that are likely to put piglets in danger.

let the blood circulate

Peripheral artery illness outcomes from a narrowing or plaque-related blockage of blood vessels that restricts blood circulate to the extremities, normally the legs. Although the ensuing lack of oxygen could cause periodic leg ache, peripheral arterial illness can develop with out ache, delaying therapy and presumably resulting in extra critical long-term well being issues. And diagnosing peripheral artery illness could be particularly troublesome in older adults, who typically have well being issues with signs much like these of PAD.

Unfortunately, the go-to diagnostic process for PAD is pricey and requires particular coaching. Nebraska Engineering’s Fadi Alsaleem, Mohammad Ali Takallou, and Ali Hazem Al Ramini contributed to a current examine aimed toward creating a less complicated, inexpensive screening method. Led by the University of Nebraska at Omaha, the examine utilized machine studying to information collected from 270 adults — 227 of them PAD43 sans – who walked a path lined with power plates whereas carrying reflective markers caught by high-speed cameras.

By figuring out particular biomechanical and pressure-related signatures, two forms of machine studying fashions efficiently discriminated between adults with and with out PAD in about 89% of the instances. Even relying solely on so-called floor response forces – the forces which might be exerted on a foot when a foot applies power to the bottom – one of many mannequin varieties nonetheless achieved an accuracy of 87%.

Finally, making use of the examine’s proof-of-concept to wearable sensors, together with these constructed into footwear, may assist alert medical doctors to the onset of too PAD‘ mentioned the staff.

ballot says…

In late 2020, the college’s Bureau of Sociological Research surveyed a random pattern of two,775 Nebraska residents. The survey arrived amid the aftershocks of two seismic occasions: the start of the COVID-19 Pandemic and nationwide protests over the homicide of George Floyd by a former Minneapolis police officer.

As a researcher who has studied the intersections between public well being, crime, policing and politics, Lisa Kort-Butler of the Institute of (*14*) determined to research these survey outcomes. She was notably interested by whether or not the final anxieties and insecurities that fueled the continuing discord may have an effect on attitudes towards public coverage and authority.

Perceive COVID-19 as a critical menace, no matter whether or not that menace was seen as an financial or well being challenge, corresponded with concern about crime. And Nebraskans watching COVID-19 as a well being menace have been additionally extra more likely to keep away from areas the place they felt unsafe. But those that know somebody who was contaminated COVID-19 really much less more likely to keep away from these areas – a seemingly paradoxical end result that nonetheless mirrored nationwide surveys.

About 20% of respondents mentioned their communities are underspending on legislation enforcement. According to the survey, Nebraskans who usually believed this even have:

  • perceived COVID-19 as a menace to the financial system fairly than public well being
  • Expressed confidence in political leaders however mistrust of well being officers on issues COVID-19
  • Believed that race relations within the United States have been deteriorating

Overall, Kort-Butler mentioned, the polling information supported the concept the uncertainty and insecurity arising from instances of upheaval could be channeled into assist for felony justice insurance policies that promise a return to normalcy.

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